This paper presents novel very large scale of integration implementation of symbol detection based on modified householder transformation QR decomposition algorithm for 4th generation long term evolution downlink receiver. QR decomposition of a channel matrix H is decomposition of matrix H into an orthogonal matrix Q and an upper triangular matrix R. Pre-processing modules based on QRD makes the symbol detection in signal processing easier. Implementing symbol detection with QRD in multiple input multiple output-orthogonal frequency division multiplexing based LTE downlink receiver helps to reduce the complexity of that receiver. Because of simplicity and numerical stability, the householder QRD algorithm is considered and modified to reduce the computation time and hardware area of the QRD block compared to the existing householder algorithm. In order to show the efficiency, the existing and proposed modified householder transformation algorithms are designed, simulated using Xilinx ISE 14.1 and synthesized in FPGA Virtex6 xc6vlx550tl-1Lff1759 device.
Wireless Personal Communications – Springer Journals
Published: Apr 25, 2017
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